Table 2-8. System Beep CodesWarning MessagesA warning message alerts you to a possible problem and asks you to take corrective action before the system continues a task. For example, before youformat a diskette, a message may warn you that you may lose all data on the diskette. Warning messages usually interrupt the procedure and require you torespond by typing y (yes) or n (no).Code Cause Corrective Action1-1-2 CPU register test failure See "Troubleshooting a Microprocessor" in "Troubleshooting Your System."1-1-3 CMOS write/read failure; faulty system board See "Getting Help."1-1-4 BIOS error Reflash the BIOS firmware (see "Getting Help").1-2-1 Programmable interval-timer failure; faulty systemboardSee "Getting Help."1-2-2 DMA initialization failure See "Troubleshooting System Memory" in "Troubleshooting Your System."1-2-3 DMA page register write/read failure1-3-1 Main-memory refresh verification failure1-3-2 No memory installed1-3-3 Chip or data line failure in the first 64 KB of mainmemory1-3-4 Odd/even logic failure in the first 64 KB of mainmemory1-4-1 Address line failure in the first 64 KB of mainmemory1-4-2 Parity failure in the first 64 KB of main memory1-4-3 Fail-safe timer test failure1-4-4 Software NMI port test failure2-1-1through2-4-4Bit failure in the first 64 KB of main memory3-1-1 Slave DMA-register failure See "Getting Help."3-1-2 Master DMA-register failure3-1-3 Master interrupt-mask register failure3-1-4 Slave interrupt-mask register failure3-2-2 Interrupt vector loading failure3-2-4 Keyboard-controller test failure See "Troubleshooting the Keyboard" in "Troubleshooting Your System."3-3-1 CMOS failure See "Getting Help."3-3-2 System configuration check failure3-3-3 Keyboard controller not detected3-3-4 Video memory test failure3-4-1 Screen initialization failure3-4-2 Screen-retrace test failure3-4-3 Video ROM search failure4-2-1 No timer tick4-2-2 Shutdown test failure4-2-3 Gate A20 failure4-2-4 Unexpected interrupt in protected mode See "Troubleshooting Expansion Cards" in "Troubleshooting Your System."4-3-1 Improperly installed or faulty memory modules See "Troubleshooting System Memory" in "Troubleshooting Your System."4-3-2 No memory modules installed in the first memorymodule connectorInstall a memory module in the first memory module connector (see "Memory Modules"in "Installing System Options").4-3-3 Faulty system board See "Getting Help."4-3-4 Time-of-day clock stopped See "Troubleshooting the System Battery" in "Troubleshooting Your System."4-4-1 Super I/O chip failure; faulty system board See "Getting Help."4-4-4 Cache test failure; faulty microprocessor See "Troubleshooting a Microprocessor" in "Troubleshooting Your System."NOTE: Warning messages are generated by either the application program or the operating system. For more information, see "Finding SoftwareSolutions" and the documentation that accompanied the operating system or application program.